EP3561953A1 - Antenna module - Google Patents
Antenna module Download PDFInfo
- Publication number
- EP3561953A1 EP3561953A1 EP17882668.1A EP17882668A EP3561953A1 EP 3561953 A1 EP3561953 A1 EP 3561953A1 EP 17882668 A EP17882668 A EP 17882668A EP 3561953 A1 EP3561953 A1 EP 3561953A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- substrate
- antenna
- frame
- control substrate
- projecting portions
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000000758 substrate Substances 0.000 claims abstract description 323
- 239000004065 semiconductor Substances 0.000 claims abstract description 23
- 229920005989 resin Polymers 0.000 claims description 16
- 239000011347 resin Substances 0.000 claims description 16
- 229910000679 solder Inorganic materials 0.000 claims description 12
- 229920001187 thermosetting polymer Polymers 0.000 claims description 12
- 230000002093 peripheral effect Effects 0.000 claims description 10
- 230000002787 reinforcement Effects 0.000 claims description 9
- 239000000463 material Substances 0.000 claims description 8
- 239000004020 conductor Substances 0.000 description 21
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 10
- 239000003822 epoxy resin Substances 0.000 description 9
- 229920000647 polyepoxide Polymers 0.000 description 9
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 7
- 239000012772 electrical insulation material Substances 0.000 description 7
- 230000005540 biological transmission Effects 0.000 description 6
- 239000000945 filler Substances 0.000 description 5
- 239000000377 silicon dioxide Substances 0.000 description 5
- 229910052802 copper Inorganic materials 0.000 description 4
- 239000010949 copper Substances 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000007747 plating Methods 0.000 description 4
- 239000011889 copper foil Substances 0.000 description 3
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- 238000010030 laminating Methods 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229910001316 Ag alloy Inorganic materials 0.000 description 1
- QCEUXSAXTBNJGO-UHFFFAOYSA-N [Ag].[Sn] Chemical compound [Ag].[Sn] QCEUXSAXTBNJGO-UHFFFAOYSA-N 0.000 description 1
- PQIJHIWFHSVPMH-UHFFFAOYSA-N [Cu].[Ag].[Sn] Chemical compound [Cu].[Ag].[Sn] PQIJHIWFHSVPMH-UHFFFAOYSA-N 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 229910000969 tin-silver-copper Inorganic materials 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
- H01Q21/06—Arrays of individually energised antenna units similarly polarised and spaced apart
- H01Q21/061—Two dimensional planar arrays
- H01Q21/065—Patch antenna array
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
- H01Q1/38—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith formed by a conductive layer on an insulating support
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L23/00—Details of semiconductor or other solid state devices
- H01L23/58—Structural electrical arrangements for semiconductor devices not otherwise provided for, e.g. in combination with batteries
- H01L23/64—Impedance arrangements
- H01L23/66—High-frequency adaptations
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/12—Supports; Mounting means
- H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
- H01Q1/2283—Supports; Mounting means by structural association with other equipment or articles mounted in or on the surface of a semiconductor substrate as a chip-type antenna or integrated with other components into an IC package
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
- H01Q21/06—Arrays of individually energised antenna units similarly polarised and spaced apart
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q23/00—Antennas with active circuits or circuit elements integrated within them or attached to them
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K1/00—Printed circuits
- H05K1/02—Details
- H05K1/14—Structural association of two or more printed circuits
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K1/00—Printed circuits
- H05K1/02—Details
- H05K1/14—Structural association of two or more printed circuits
- H05K1/144—Stacked arrangements of planar printed circuit boards
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K3/00—Apparatus or processes for manufacturing printed circuits
- H05K3/22—Secondary treatment of printed circuits
- H05K3/28—Applying non-metallic protective coatings
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2223/00—Details relating to semiconductor or other solid state devices covered by the group H01L23/00
- H01L2223/58—Structural electrical arrangements for semiconductor devices not otherwise provided for
- H01L2223/64—Impedance arrangements
- H01L2223/66—High-frequency adaptations
- H01L2223/6661—High-frequency adaptations for passive devices
- H01L2223/6677—High-frequency adaptations for passive devices for antenna, e.g. antenna included within housing of semiconductor device
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
- H01Q9/04—Resonant antennas
- H01Q9/0407—Substantially flat resonant element parallel to ground plane, e.g. patch antenna
- H01Q9/045—Substantially flat resonant element parallel to ground plane, e.g. patch antenna with particular feeding means
- H01Q9/0457—Substantially flat resonant element parallel to ground plane, e.g. patch antenna with particular feeding means electromagnetically coupled to the feed line
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
- H05K2201/20—Details of printed circuits not provided for in H05K2201/01 - H05K2201/10
Definitions
- the present disclosure relates to an antenna module.
- An antenna module includes a control substrate, a frame substrate, and an antenna substrate.
- the control substrate, the frame substrate, and the antenna substrate are bonded via a bonding member.
- the bonding member is, for example, solder. Examples of such an antenna module include that in Patent Document 1.
- variations may occur in a thickness of the bonding member made from solder, and warping may occur in the antenna substrate.
- a spacing and parallelism between the control substrate and the antenna substrate have been susceptible to variation.
- variations occur in a distance and/or the parallelism between the control substrate and the antenna substrate, a significant variation occurs in frequency characteristics of the antenna module, making it no longer possible to favorably transmit and receive high-frequency signals in a desired frequency bandwidth.
- Patent Document 1 JP 2004-327641 A
- An antenna module includes a control substrate, a frame substrate, and an antenna substrate.
- the control substrate has a flat plate shape and is configured to house or mount a semiconductor element.
- the frame substrate is positioned on an upper surface of the control substrate via a bonding member and exposes a center portion of the upper surface of the control substrate.
- the antenna substrate is positioned on an upper surface of the frame substrate via a bonding member so as to face the control substrate.
- the antenna substrate has a flat plate shape and is provided with a plurality of antenna patterns positioned on an upper surface and a lower surface thereof.
- the frame substrate includes a frame main body having a frame shape along an outer peripheral portion of the control substrate; and a crosspiece for reinforcement extending across an area defined by an inner periphery of the frame main body.
- the frame substrate further includes, on the frame main body and the crosspiece, a plurality of projecting portions that come into contact with the control substrate at a fixed height; and a plurality of projecting portions that come into contact with the antenna substrate at a fixed height.
- An antenna module includes a control substrate, a frame substrate, and an antenna substrate.
- the control substrate has a flat plate shape and is configured to house or mount a semiconductor element.
- the frame substrate is bonded to an upper surface of the control substrate via a bonding member and exposes a center portion of the upper surface of the control substrate.
- the antenna substrate is positioned on an upper surface of the frame substrate via a bonding member so as to face the control substrate.
- the antenna substrate has a flat plate shape and is provided with a plurality of antenna patterns positioned on an upper surface and a lower surface thereof.
- the frame substrate includes a frame main body having a frame shape along an outer peripheral portion of the control substrate; and a crosspiece for reinforcement extending across an area defined by an inner periphery of the frame main body.
- the control substrate and the antenna substrate each include, on a surface facing the frame substrate, a plurality of projecting portions that come into contact with the frame main body and the crosspiece at a fixed height.
- An antenna module includes a control substrate, a frame substrate, and an antenna substrate.
- the control substrate has a flat plate shape and is configured to house or mount a semiconductor element.
- the frame substrate is bonded to an upper surface of the control substrate via a bonding member and exposes a center portion of the upper surface of the control substrate.
- the antenna substrate is positioned on an upper surface of the frame substrate via a bonding member so as to face the control substrate.
- the antenna substrate has a flat plate shape and is provided with a plurality of antenna patterns positioned on an upper surface and a lower surface thereof.
- the frame substrate includes a frame main body having a frame shape along an outer peripheral portion of the control substrate; and a crosspiece for reinforcement extending across an area defined by an inner periphery of the frame main body.
- the frame substrate further includes, on upper surfaces of the frame main body and the crosspiece, a plurality of projecting portions that come into contact with the antenna substrate at a fixed height.
- the control substrate includes, on the upper surface thereof, a plurality of projecting portions that come into contact with the frame main body and the crosspiece at a fixed height.
- An antenna module includes a control substrate, a frame substrate, and an antenna substrate.
- the control substrate has a flat plate shape and is configured to house or mount a semiconductor element.
- the frame substrate is bonded to an upper surface of the control substrate via a bonding member and exposes a center portion of the upper surface of the control substrate.
- the antenna substrate is positioned on an upper surface of the frame substrate via a bonding member so as to face the control substrate.
- the antenna substrate has a flat plate shape and is provided with a plurality of antenna patterns positioned on an upper surface and a lower surface thereof.
- the frame substrate includes a frame main body having a frame shape along an outer peripheral portion of the control substrate; and a crosspiece for reinforcement extending across an area defined by an inner periphery of the frame main body.
- the frame substrate further includes, on lower surfaces of the frame main body and the crosspiece, a plurality of projecting portions that come into contact with the control substrate at a fixed height.
- the antenna substrate includes, on the lower surface thereof, a plurality of projecting portions that come into contact with the frame main body and the crosspiece at a fixed height.
- An antenna module of the present example includes a control substrate 10, a frame substrate 20, and an antenna substrate 30.
- the control substrate 10, the frame substrate 20, and the antenna substrate 30 are bonded via bonding members 41 and 42.
- the bonding member 41 is, for example, solder.
- the bonding member 42 is, for example, a thermosetting resin.
- the control substrate 10 is formed by alternately laminating a plurality of electrical conductor layers 12 and insulating layers 13 on upper and lower surfaces of an insulating plate 11. A solder-resist layer 14 is adhered to upper and lower surfaces of the control substrate 10.
- the control substrate 10 has a square, flat plate shape. A semiconductor element 15 is housed inside the control substrate 10.
- the insulating plate 11 is made from an electrical insulation material such as a glass-epoxy resin.
- the insulating plate 11 has a thickness of about from 0.1 to 0.8 mm.
- a plurality of hollowed-out portions 11a are formed in a center portion of the insulating plate 11.
- the hollowed-out portion 11a has a square shape.
- the semiconductor element 15 is contained within the hollowed-out portion 11a.
- the semiconductor element 15 is bonded to an inner wall of the hollowed-out portion 11a via an adhesive 11b.
- the adhesive 11b is made from a thermosetting resin such as an epoxy resin.
- a plurality of through-holes 11c are formed in the insulating plate 11.
- a diameter of the through-hole 11c is about from 75 to 200 ⁇ m.
- the electrical conductor layer 12 is adhered to the upper and lower surfaces of the insulating plate 11 and inner walls of the through-holes 11c.
- the electrical conductor layer 12 adhered to the insulating plate 11 is made from a copper foil and a copper plating layer.
- the electrical conductor layer 12 adhered to the insulating plate 11 has a thickness of about from 5 to 42 ⁇ m.
- the hole filling resin 11d is formed by dispersing an insulating filler such as silica in a thermosetting resin such as an epoxy resin.
- the insulating layer 13 is made from an electrical insulation material obtained by dispersing an insulating filler such as silica in a thermosetting resin such as an epoxy resin.
- the insulation layer 13 has a thickness of about from 25 to 50 ⁇ m.
- a plurality of via holes 13a are formed in the respective insulating layers 13. The diameter of the via hole 13a is about from 30 to 100 ⁇ m.
- the electrical conductor layer 12 is adhered to surfaces of the respective insulating layers 13 and inside the via holes 13a.
- the electrical conductor layer 12 adhered to the insulating layers 13 is made from a copper plating layer.
- the electrical conductor layer 12 adhered to the insulating layers 13 has a thickness of about from 5 to 42 ⁇ m.
- the solder-resist layer 14 is made from an electrical insulation material obtained by dispersing an insulating filler such as silica in a thermosetting resin such as an epoxy resin.
- the solder-resist layer 14 has a thickness of about from 25 to 50 ⁇ m.
- a plurality of antenna patterns 16 are disposed in a center portion of the upper surface of the control substrate 10.
- the antenna pattern 16 is made from the electrical conductor layer 12.
- the antenna pattern 16 is exposed from the solder-resist layer 14 on the upper surface side.
- the antenna pattern 16 has, for example, a rectangular shape with one side being about from 0.5 to 5 mm.
- the antenna pattern 16 is electrically connected to an electrode of the semiconductor element 15. Radio waves are transmitted and received between the semiconductor element 15 and an external source via these antenna patterns 16 and antenna patterns 34 described later.
- a plurality of frame substrate bonding pads 17 are formed on an outer peripheral portion of the upper surface of the control substrate 10.
- the frame substrate bonding pad 17 is made from the electrical conductor layer 12.
- the frame substrate bonding pad 17 is exposed from the solder-resist layer 14 on the upper surface side.
- the frame substrate bonding pad 17 is circular.
- a diameter of the frame substrate bonding pad 17 is about from 300 to 600 ⁇ m.
- the frame substrate 20 is bonded to the frame substrate bonding pad 17 via the bonding member 41 made from solder.
- the bonding member 41 is made from, for example, a tin-silver alloy or a tin-silver-copper alloy.
- a plurality of external connection pads 18 are formed on the lower surface of the control substrate 10.
- the external connection pad 18 is made from the electrical conductor layer 12.
- the external connection pad 18 is exposed from the solder-resist layer 14 on the lower surface side.
- the external connection pad 18 is circular.
- a diameter of the external connection pad 18 is about from 300 to 600 ⁇ m.
- the external connection pad 18 is electrically connected to an electrode of the semiconductor element 15.
- the external connection pad 18 is connected to an electrical circuit board such as a motherboard (not illustrated).
- the frame substrate 20 is formed by laminating an electrical conductor layer 22 on upper and lower surfaces of an insulating plate 21. A solder-resist layer 23 is adhered to upper and lower surfaces of the frame substrate 20.
- the frame substrate 20 exposes the center portion of the upper surface of the control substrate 10.
- the frame substrate 20 includes a frame main body 20A having a square frame shape, and a crosspiece 20B for reinforcement that extends across an area defined by an inner periphery of the frame main body 20A.
- the frame main body 20A is bonded to the control substrate 10 and the antenna substrate 30 via the bonding member 41 made from solder.
- the crosspiece 20B is bonded to the control substrate 10 and the antenna substrate 30 via the bonding member 42 made from a thermosetting resin.
- the insulating plate 21 is made from an electrical insulation material such as a glass-epoxy resin.
- the insulating plate 21 has a thickness of about from 0.1 to 0.8 mm.
- the electrical conductor layer 22 laminated on the insulating plate 21 is made from a copper foil or a copper plating layer.
- the electrical conductor layer 22 has a thickness of about from 5 to 42 ⁇ m.
- the solder-resist layer 23 is made from an electrical insulation material obtained by dispersing an insulating filler such as silica in a thermosetting resin such as an epoxy resin.
- the solder-resist layer 23 has a thickness of about from 25 to 50 ⁇ m.
- a control substrate bonding pad 24 is formed on a lower surface of the frame main body 20A.
- the control substrate bonding pad 24 is made from the electrical conductor layer 22.
- the control substrate bonding pad 24 is exposed from the solder-resist layer 23.
- the control substrate bonding pad 24 is circular.
- a diameter of the control substrate bonding pad 24 is about from 300 to 600 ⁇ m.
- the control substrate bonding pad 24 is bonded to the frame substrate bonding pad 17 of the control substrate 10 via the bonding member 41 made from solder.
- An antenna substrate bonding pad 25 is formed on an upper surface of the frame main body 20A.
- the antenna substrate bonding pad 25 is made from the electrical conductor layer 22.
- the antenna substrate bonding pad 25 is exposed from the solder-resist layer 23.
- the antenna substrate bonding pad 25 is circular.
- a diameter of the antenna substrate bonding pad 25 is about from 300 to 600 ⁇ m.
- the antenna substrate 30 is bonded to the antenna substrate bonding pad 25 via the bonding member 41 made from solder.
- the antenna substrate 30 is formed by laminating an electrical conductor layer 32 on upper and lower surfaces of an insulating plate 31. A solder-resist layer 33 is adhered to upper and lower surfaces of the antenna substrate 30.
- the antenna substrate 30 has a square, flat plate shape. The antenna substrate 30 is bonded to the upper surface of the frame substrate 20 so as to face the control substrate 10.
- the insulating plate 31 is made from an electrical insulation material such as a glass-epoxy resin.
- the insulating plate 31 has a thickness of about from 25 to 100 ⁇ m.
- the electrical conductor layers 32 laminated on the upper and lower surfaces of the insulating plate 31 are each made from a copper foil or a copper plating layer.
- the electrical conductor layer 32 has a thickness of about from 5 to 42 ⁇ m.
- the solder-resist layer 33 is made from an electrical insulation material obtained by dispersing an insulating filler such as silica in a thermosetting resin such as an epoxy resin.
- the solder-resist layer 33 has a thickness of about from 25 to 50 ⁇ m.
- the antenna substrate 30 includes a plurality of the antenna patterns 34 along the upper and lower surfaces thereof.
- the antenna pattern 34 is made from the electrical conductor layer 32.
- the antenna pattern 34 is exposed from the solder-resist layer 33.
- the antenna pattern 34 has, for example, a rectangular shape with one side being about from 0.5 to 5 mm.
- the antenna patterns 34 are each electromagnetically coupled with the antenna patterns 16 of the control substrate 10. Radio waves are transmitted and received between the semiconductor element 15 and an external source via these antenna patterns 34 and the aforementioned antenna patterns 16.
- the antenna substrate 30 includes a frame substrate bonding pad 35 on an outer peripheral portion of the lower surface thereof.
- the frame substrate bonding pad 35 is made from the electrical conductor layer 32.
- the frame substrate bonding pad 35 is exposed from the solder-resist layer 33.
- the frame substrate bonding pad 35 is circular.
- a diameter of the frame substrate bonding pad 35 is about from 300 to 600 ⁇ m.
- the frame substrate bonding pad 35 is bonded to the antenna substrate bonding pad 25 of the frame substrate 20 via the bonding member 41 made from solder.
- the semiconductor element 15 is a high-frequency element. High-frequency signals received by the antenna patterns 16 and 34 are input to the semiconductor element 15. Alternatively, the semiconductor element 15 outputs the high-frequency signals transmitted from the antenna patterns 16 and 34.
- a plurality of projecting portions 26 are formed on the upper and lower surfaces of the frame main body 20A and the crosspiece 20B.
- the projecting portion 26 is formed on the solder-resist layer 23.
- the projecting portion 26 may be made from the same material as the solder-resist layer 23.
- a shape of the projecting portion 26 is, for example, a truncated cone in the present example.
- a diameter of the projecting portion 26 is about from 50 to 5000 ⁇ m.
- a height of the projecting portion 26 is about from 30 to 100 ⁇ m.
- the frame substrate 20 includes the crosspiece 20B in the area defined by the inner periphery of the frame main body 20A. Further, the plurality of projecting portions 26 that come into contact with the control substrate 10 at a fixed height are formed on the lower surfaces of the frame main body 20A and the crosspiece 20B. The plurality of projecting portions 26 that come into contact with the antenna substrate 30 at a fixed height are provided on the upper surfaces of the frame main body 20A and the crosspiece 20B. With these projecting portions 26, gaps G1 and G2 between the control substrate 10 and the antenna substrate 30 are held constant. Therefore, according to the antenna module of the present example, there is no variation in distance or inclination between the control substrate 10 and the antenna substrate 30. Thus, according to the antenna module of the present example, it is possible to provide an antenna module having stable transmission and reception characteristics.
- the control substrate 10, the frame substrate 20, and the antenna substrate 30 are prepared.
- the bonding member 41 made from solder is fused in advance to the frame substrate bonding pad 17 of the control substrate 10 and the frame substrate bonding pad 35 of the antenna substrate 30.
- a protruding height of the bonding member 41 from the solder-resist layers 14 and 33 is about from 10 to 50 ⁇ m higher than a protruding height of the projecting portions 26 from the solder-resist layer 23.
- the control substrate 10, the frame substrate 20, and the antenna substrate 30 are stacked vertically.
- a top portion of the bonding member 41 fused on the control substrate 10 comes into contact with the control substrate bonding pad 24 of the frame substrate 20.
- a top portion of the bonding member 41 fused on the antenna substrate 30 comes into contact with the antenna substrate bonding pad 25 of the frame substrate 20.
- gaps of about from 10 to 50 ⁇ m are formed between the projecting portions 26 and the control substrate 10 as well as the antenna substrate 30.
- the bonding member 41 made from solder is melted by heating while applying a load to the antenna substrate 30 from above.
- the projecting portions 26 on the lower surface side of the frame substrate 20 all come into contact with the upper surface of the control substrate 10 at a fixed height.
- the projecting portions 26 on the upper surface side of the frame substrate 20 all come into contact with the lower surface of the antenna substrate 30 at a fixed height.
- These projecting portions 26 are cooled while being in contact with the control substrate 10 and the antenna substrate 30 to solidify the bonding member 41.
- the control substrate 10, the frame substrate 20, and the antenna substrate 30 are bonded at a predetermined interval corresponding to the height of the projecting portions 26 in the region corresponding to the frame main body 20A.
- the bonding member 42 in liquid form and made from an uncured thermosetting resin is injected between the crosspiece 20B of the frame substrate 20 and the control substrate 10 as well as the antenna substrate 30, and the bonding member 42 is thermally cured by heating while applying a load to the antenna substrate 30 from above.
- the projecting portions 26 on the lower surface side of the frame substrate 20 all come into contact with the upper surface of the control substrate 10 at a fixed height.
- the projecting portions 26 on the upper surface side of the frame substrate 20 all come into contact with the lower surface of the antenna substrate 30 at a fixed height.
- control substrate 10 the frame substrate 20, and the antenna substrate 30 are bonded at a predetermined interval corresponding to the height of the projecting portions 26 in a region corresponding to the frame main body 20A and the crosspiece 20B.
- control substrate 10 there is no variation in distance or inclination between the control substrate 10 and the antenna substrate 30, and an antenna module having stable transmission and reception characteristics is completed.
- resin injection holes 36 and 27 may be provided in advance in the antenna substrate 30 and the frame substrate 20, and injection may be performed via these resin injection holes 36 and 27.
- FIG. 7 illustrates a second example of an embodiment of the present disclosure in a schematic exploded cross-sectional view and a schematic cross-sectional view.
- the same reference signs are assigned to the same locations as in the first example described above, and detailed descriptions thereof will be omitted.
- projecting portions 19 are provided on the upper surface of the solder-resist layer 14 on the upper surface side of the control substrate 10.
- Projecting portions 37 are provided on the lower surface of the solder-resist layer 33 on the lower surface side of the antenna substrate 30. These projecting portions 19 and 37 have the same shape and are made from the same material as the projecting portions 26 in the first example described above.
- the projecting portions 19 of the control substrate 10 come into contact with the lower surfaces of the frame main body 20A and the crosspiece 20B at a fixed height.
- the projecting portions 37 of the antenna substrate 30 come into contact with the upper surfaces of the frame main body 20A and the crosspiece 20B at a fixed height.
- the control substrate 10 includes, on the upper surface thereof, the plurality of projecting portions 19 that come into contact with the frame main body 20A and the crosspiece 20B at a fixed height.
- the antenna substrate 30 includes, on the lower surface thereof, the plurality of projecting portions 37 that come into contact with the frame main body 20A and the crosspiece 20B at a fixed height. With these projecting portions 19 and 37, the gaps G1 and G2 between the control substrate 10 and the antenna substrate 30 are held constant. Therefore, according to the antenna module of the present example, there is no variation in distance or inclination between the control substrate 10 and the antenna substrate 30. Thus, according to the antenna module of the present example, it is possible to provide an antenna module having stable transmission and reception characteristics.
- FIG. 8 illustrates a third example of an embodiment of the present disclosure in a schematic exploded cross-sectional view and a schematic cross-sectional view.
- the same reference signs are assigned to the same locations as in the first example described above, and detailed descriptions thereof will be omitted.
- the projecting portions 19 are provided on the upper surface of the solder-resist layer 14 on the upper surface side of the control substrate 10.
- the projecting portions 26 are provided on the upper surface of the solder-resist layer 23 on the upper surface side of the frame substrate 20. These projecting portions 19 and 26 have the same shape and are made from the same material as the projecting portions 26 in the first example described above.
- the projecting portions 19 of the control substrate 10 come into contact with the lower surfaces of the frame main body 20A and the crosspiece 20B at a fixed height.
- the projecting portions 26 of the frame substrate 20 come into contact with the lower surface of the antenna substrate 30 at a fixed height.
- the control substrate 10 includes, on the upper surface thereof, the plurality of projecting portions 19 that come into contact with the frame main body 20A and the crosspiece 20B at a fixed height.
- the frame substrate 20 includes, on the upper surface thereof, the plurality of projecting portions 26 that come into contact with the antenna substrate 30 at a fixed height.
- FIG. 9 illustrates a fourth example of an embodiment of the present disclosure in a schematic exploded cross-sectional view and a schematic cross-sectional view.
- the same reference signs are assigned to the same locations as in the first example described above, and detailed descriptions thereof will be omitted.
- the projecting portions 26 are provided on the lower surface of the solder-resist layer 23 on the lower surface side of the frame substrate 20.
- the projecting portions 37 are provided on the lower surface of the solder-resist layer 33 on the lower surface side of the antenna substrate 30. These projecting portions 26 and 37 have the same shape and are made from the same material as the projecting portions 26 in the first example described above.
- the projecting portions 26 of the frame substrate 20 come into contact with the upper surface of the control substrate 10 at a fixed height.
- the projecting portions 37 of the antenna substrate 30 come into contact with the upper surfaces of the frame main body 20A and the crosspiece 20B at a fixed height.
- the frame substrate 20 includes, on the lower surface thereof, the plurality of projecting portions 26 that come into contact with the control substrate 10 at a fixed height.
- the antenna substrate 30 includes, on the lower surface thereof, the plurality of projecting portions 37 that come into contact with the frame main body 20A and the crosspiece 20B at a fixed height. With these projecting portions 26 and 37, the gaps G1 and G2 between the control substrate 10 and the antenna substrate 30 are held constant. Therefore, according to the antenna module of the present example, there is no variation in distance or inclination between the control substrate 10 and the antenna substrate 30. Thus, according to the antenna module of the present example, it is possible to provide an antenna module having stable transmission and reception characteristics.
- the frame substrate includes the crosspiece in the area defined by the inner periphery of the frame main body, and between the frame main body/the crosspiece and the control substrate as well as the antenna substrate, projecting portions that come into contact with the opposing control substrate, frame substrate, and antenna substrate are provided at a fixed height. Therefore, there is no variation in distance or inclination between the control substrate and the antenna substrate.
- the antenna module of the present disclosure is an antenna module having stable transmission and reception characteristics for high-frequency signals in a desired frequency bandwidth.
- the present disclosure is not limited to the antenna modules of the respective examples described above, and various changes or improvements can be made within the scope of the claims.
- the control substrate 10, the frame substrate 20, and the antenna substrate 30 are bonded by two types of bonding members of the bonding member 41 made from solder and the bonding member 42 made from a thermosetting resin.
- the control substrate 10, the frame substrate 20, and the antenna substrate 30 may be bonded by only the bonding member 42 made from a thermosetting resin. In this case, the method for bonding the control substrate 10, the frame substrate 20, and the antenna substrate 30 of the antenna module can be made simpler.
- the projecting portions 19, 26, and 37 have a truncated cone shape but may have another shape such as the shape of a cylinder, a truncated pyramid, a prism, or a cross-shaped column.
- the semiconductor element 15 is housed inside the control substrate 10, but the semiconductor element 15 may be mounted on at least one of the upper surface and the lower surface of the control substrate.
- the shapes of the frame substrate bonding pad 17, the external connection pad 18, the control substrate bonding pad 24, the antenna substrate bonding pad 25, and the frame substrate bonding pad 35 may be shapes other than circular.
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Abstract
Description
- The present disclosure relates to an antenna module.
- An antenna module includes a control substrate, a frame substrate, and an antenna substrate. The control substrate, the frame substrate, and the antenna substrate are bonded via a bonding member. The bonding member is, for example, solder. Examples of such an antenna module include that in
Patent Document 1. - According to the antenna module in the related art, variations may occur in a thickness of the bonding member made from solder, and warping may occur in the antenna substrate. As a result, a spacing and parallelism between the control substrate and the antenna substrate have been susceptible to variation. When variations occur in a distance and/or the parallelism between the control substrate and the antenna substrate, a significant variation occurs in frequency characteristics of the antenna module, making it no longer possible to favorably transmit and receive high-frequency signals in a desired frequency bandwidth.
- Patent Document 1:
JP 2004-327641 A - An antenna module according to a first aspect of the present disclosure includes a control substrate, a frame substrate, and an antenna substrate. The control substrate has a flat plate shape and is configured to house or mount a semiconductor element. The frame substrate is positioned on an upper surface of the control substrate via a bonding member and exposes a center portion of the upper surface of the control substrate. The antenna substrate is positioned on an upper surface of the frame substrate via a bonding member so as to face the control substrate. The antenna substrate has a flat plate shape and is provided with a plurality of antenna patterns positioned on an upper surface and a lower surface thereof. The frame substrate includes a frame main body having a frame shape along an outer peripheral portion of the control substrate; and a crosspiece for reinforcement extending across an area defined by an inner periphery of the frame main body. The frame substrate further includes, on the frame main body and the crosspiece, a plurality of projecting portions that come into contact with the control substrate at a fixed height; and a plurality of projecting portions that come into contact with the antenna substrate at a fixed height.
- An antenna module according to a second aspect of the present disclosure includes a control substrate, a frame substrate, and an antenna substrate. The control substrate has a flat plate shape and is configured to house or mount a semiconductor element. The frame substrate is bonded to an upper surface of the control substrate via a bonding member and exposes a center portion of the upper surface of the control substrate. The antenna substrate is positioned on an upper surface of the frame substrate via a bonding member so as to face the control substrate. The antenna substrate has a flat plate shape and is provided with a plurality of antenna patterns positioned on an upper surface and a lower surface thereof. The frame substrate includes a frame main body having a frame shape along an outer peripheral portion of the control substrate; and a crosspiece for reinforcement extending across an area defined by an inner periphery of the frame main body. The control substrate and the antenna substrate each include, on a surface facing the frame substrate, a plurality of projecting portions that come into contact with the frame main body and the crosspiece at a fixed height.
- An antenna module according to a third aspect of the present disclosure includes a control substrate, a frame substrate, and an antenna substrate. The control substrate has a flat plate shape and is configured to house or mount a semiconductor element. The frame substrate is bonded to an upper surface of the control substrate via a bonding member and exposes a center portion of the upper surface of the control substrate. The antenna substrate is positioned on an upper surface of the frame substrate via a bonding member so as to face the control substrate. The antenna substrate has a flat plate shape and is provided with a plurality of antenna patterns positioned on an upper surface and a lower surface thereof. The frame substrate includes a frame main body having a frame shape along an outer peripheral portion of the control substrate; and a crosspiece for reinforcement extending across an area defined by an inner periphery of the frame main body. The frame substrate further includes, on upper surfaces of the frame main body and the crosspiece, a plurality of projecting portions that come into contact with the antenna substrate at a fixed height. The control substrate includes, on the upper surface thereof, a plurality of projecting portions that come into contact with the frame main body and the crosspiece at a fixed height.
- An antenna module according to a fourth aspect of the present disclosure includes a control substrate, a frame substrate, and an antenna substrate. The control substrate has a flat plate shape and is configured to house or mount a semiconductor element. The frame substrate is bonded to an upper surface of the control substrate via a bonding member and exposes a center portion of the upper surface of the control substrate. The antenna substrate is positioned on an upper surface of the frame substrate via a bonding member so as to face the control substrate. The antenna substrate has a flat plate shape and is provided with a plurality of antenna patterns positioned on an upper surface and a lower surface thereof. The frame substrate includes a frame main body having a frame shape along an outer peripheral portion of the control substrate; and a crosspiece for reinforcement extending across an area defined by an inner periphery of the frame main body. The frame substrate further includes, on lower surfaces of the frame main body and the crosspiece, a plurality of projecting portions that come into contact with the control substrate at a fixed height. The antenna substrate includes, on the lower surface thereof, a plurality of projecting portions that come into contact with the frame main body and the crosspiece at a fixed height.
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-
FIG. 1 is a schematic cross-sectional view illustrating a first example of an embodiment of an antenna module of the present disclosure. -
FIG. 2 is a schematic exploded perspective view illustrating the first example of an embodiment of the antenna module of the present disclosure. -
FIG. 3 is a schematic cross-sectional view for explaining a manufacturing method of the first example of an embodiment of the antenna module of the present disclosure. -
FIG. 4 is a schematic cross-sectional view for explaining the manufacturing method of the first example of an embodiment of the antenna module of the present disclosure. -
FIG. 5 is a schematic cross-sectional view for explaining the manufacturing method of the first example of an embodiment of the antenna module of the present disclosure. -
FIG. 6 is a schematic cross-sectional view for explaining the manufacturing method of the first example of an embodiment of the antenna module of the present disclosure. -
FIG. 7 includes a schematic exploded cross-sectional view and a schematic cross-sectional view illustrating a second example of an embodiment of the antenna module of the present disclosure. -
FIG. 8 includes a schematic exploded cross-sectional view and a schematic cross-sectional view illustrating a third example of an embodiment of the antenna module of the present disclosure. -
FIG. 9 includes a schematic exploded cross-sectional view and a schematic cross-sectional view illustrating a fourth example of an embodiment of the antenna module of the present disclosure. -
FIG. 10 is a schematic cross-sectional view illustrating a modified example of the first example of an embodiment of the antenna module of the present disclosure. - A first example of an embodiment of the present disclosure is illustrated in a schematic cross-sectional view in
FIG. 1 and in a schematic exploded perspective view inFIG. 2 . An antenna module of the present example includes acontrol substrate 10, a frame substrate 20, and anantenna substrate 30. Thecontrol substrate 10, the frame substrate 20, and theantenna substrate 30 are bonded via bondingmembers member 41 is, for example, solder. The bondingmember 42 is, for example, a thermosetting resin. - The
control substrate 10 is formed by alternately laminating a plurality of electrical conductor layers 12 and insulating layers 13 on upper and lower surfaces of an insulating plate 11. A solder-resist layer 14 is adhered to upper and lower surfaces of thecontrol substrate 10. Thecontrol substrate 10 has a square, flat plate shape. Asemiconductor element 15 is housed inside thecontrol substrate 10. - The insulating plate 11 is made from an electrical insulation material such as a glass-epoxy resin. The insulating plate 11 has a thickness of about from 0.1 to 0.8 mm. A plurality of hollowed-out portions 11a are formed in a center portion of the insulating plate 11. The hollowed-out portion 11a has a square shape. The
semiconductor element 15 is contained within the hollowed-out portion 11a. Thesemiconductor element 15 is bonded to an inner wall of the hollowed-out portion 11a via an adhesive 11b. The adhesive 11b is made from a thermosetting resin such as an epoxy resin. - A plurality of through-holes 11c are formed in the insulating plate 11. A diameter of the through-hole 11c is about from 75 to 200 µm.
- The electrical conductor layer 12 is adhered to the upper and lower surfaces of the insulating plate 11 and inner walls of the through-holes 11c. The electrical conductor layer 12 adhered to the insulating plate 11 is made from a copper foil and a copper plating layer. The electrical conductor layer 12 adhered to the insulating plate 11 has a thickness of about from 5 to 42 µm.
- An interior of the through-hole 11c on which the electrical conductor layer 12 is adhered is filled with a hole filling resin 11d. The hole filling resin 11d is formed by dispersing an insulating filler such as silica in a thermosetting resin such as an epoxy resin.
- The insulating layer 13 is made from an electrical insulation material obtained by dispersing an insulating filler such as silica in a thermosetting resin such as an epoxy resin. The insulation layer 13 has a thickness of about from 25 to 50 µm. A plurality of via holes 13a are formed in the respective insulating layers 13. The diameter of the via hole 13a is about from 30 to 100 µm.
- The electrical conductor layer 12 is adhered to surfaces of the respective insulating layers 13 and inside the via holes 13a. The electrical conductor layer 12 adhered to the insulating layers 13 is made from a copper plating layer. The electrical conductor layer 12 adhered to the insulating layers 13 has a thickness of about from 5 to 42 µm.
- The solder-resist
layer 14 is made from an electrical insulation material obtained by dispersing an insulating filler such as silica in a thermosetting resin such as an epoxy resin. The solder-resistlayer 14 has a thickness of about from 25 to 50 µm. - A plurality of
antenna patterns 16 are disposed in a center portion of the upper surface of thecontrol substrate 10. Theantenna pattern 16 is made from the electrical conductor layer 12. Theantenna pattern 16 is exposed from the solder-resistlayer 14 on the upper surface side. Theantenna pattern 16 has, for example, a rectangular shape with one side being about from 0.5 to 5 mm. Theantenna pattern 16 is electrically connected to an electrode of thesemiconductor element 15. Radio waves are transmitted and received between thesemiconductor element 15 and an external source via theseantenna patterns 16 and antenna patterns 34 described later. - A plurality of frame
substrate bonding pads 17 are formed on an outer peripheral portion of the upper surface of thecontrol substrate 10. The framesubstrate bonding pad 17 is made from the electrical conductor layer 12. The framesubstrate bonding pad 17 is exposed from the solder-resistlayer 14 on the upper surface side. The framesubstrate bonding pad 17 is circular. A diameter of the framesubstrate bonding pad 17 is about from 300 to 600 µm. The frame substrate 20 is bonded to the framesubstrate bonding pad 17 via thebonding member 41 made from solder. The bondingmember 41 is made from, for example, a tin-silver alloy or a tin-silver-copper alloy. - A plurality of external connection pads 18 are formed on the lower surface of the
control substrate 10. The external connection pad 18 is made from the electrical conductor layer 12. The external connection pad 18 is exposed from the solder-resistlayer 14 on the lower surface side. The external connection pad 18 is circular. A diameter of the external connection pad 18 is about from 300 to 600 µm. The external connection pad 18 is electrically connected to an electrode of thesemiconductor element 15. The external connection pad 18 is connected to an electrical circuit board such as a motherboard (not illustrated). - The frame substrate 20 is formed by laminating an electrical conductor layer 22 on upper and lower surfaces of an insulating plate 21. A solder-resist layer 23 is adhered to upper and lower surfaces of the frame substrate 20. The frame substrate 20 exposes the center portion of the upper surface of the
control substrate 10. The frame substrate 20 includes a framemain body 20A having a square frame shape, and a crosspiece 20B for reinforcement that extends across an area defined by an inner periphery of the framemain body 20A. The framemain body 20A is bonded to thecontrol substrate 10 and theantenna substrate 30 via thebonding member 41 made from solder. The crosspiece 20B is bonded to thecontrol substrate 10 and theantenna substrate 30 via thebonding member 42 made from a thermosetting resin. - The insulating plate 21 is made from an electrical insulation material such as a glass-epoxy resin. The insulating plate 21 has a thickness of about from 0.1 to 0.8 mm. The electrical conductor layer 22 laminated on the insulating plate 21 is made from a copper foil or a copper plating layer. The electrical conductor layer 22 has a thickness of about from 5 to 42 µm.
- The solder-resist layer 23 is made from an electrical insulation material obtained by dispersing an insulating filler such as silica in a thermosetting resin such as an epoxy resin. The solder-resist layer 23 has a thickness of about from 25 to 50 µm.
- A control substrate bonding pad 24 is formed on a lower surface of the frame
main body 20A. The control substrate bonding pad 24 is made from the electrical conductor layer 22. The control substrate bonding pad 24 is exposed from the solder-resist layer 23. The control substrate bonding pad 24 is circular. A diameter of the control substrate bonding pad 24 is about from 300 to 600 µm. The control substrate bonding pad 24 is bonded to the framesubstrate bonding pad 17 of thecontrol substrate 10 via thebonding member 41 made from solder. - An antenna substrate bonding pad 25 is formed on an upper surface of the frame
main body 20A. The antenna substrate bonding pad 25 is made from the electrical conductor layer 22. The antenna substrate bonding pad 25 is exposed from the solder-resist layer 23. The antenna substrate bonding pad 25 is circular. A diameter of the antenna substrate bonding pad 25 is about from 300 to 600 µm. Theantenna substrate 30 is bonded to the antenna substrate bonding pad 25 via thebonding member 41 made from solder. - The
antenna substrate 30 is formed by laminating an electrical conductor layer 32 on upper and lower surfaces of an insulatingplate 31. A solder-resist layer 33 is adhered to upper and lower surfaces of theantenna substrate 30. Theantenna substrate 30 has a square, flat plate shape. Theantenna substrate 30 is bonded to the upper surface of the frame substrate 20 so as to face thecontrol substrate 10. - The insulating
plate 31 is made from an electrical insulation material such as a glass-epoxy resin. The insulatingplate 31 has a thickness of about from 25 to 100 µm. The electrical conductor layers 32 laminated on the upper and lower surfaces of the insulatingplate 31 are each made from a copper foil or a copper plating layer. The electrical conductor layer 32 has a thickness of about from 5 to 42 µm. - The solder-resist layer 33 is made from an electrical insulation material obtained by dispersing an insulating filler such as silica in a thermosetting resin such as an epoxy resin. The solder-resist layer 33 has a thickness of about from 25 to 50 µm.
- The
antenna substrate 30 includes a plurality of the antenna patterns 34 along the upper and lower surfaces thereof. The antenna pattern 34 is made from the electrical conductor layer 32. The antenna pattern 34 is exposed from the solder-resist layer 33. The antenna pattern 34 has, for example, a rectangular shape with one side being about from 0.5 to 5 mm. The antenna patterns 34 are each electromagnetically coupled with theantenna patterns 16 of thecontrol substrate 10. Radio waves are transmitted and received between thesemiconductor element 15 and an external source via these antenna patterns 34 and theaforementioned antenna patterns 16. - The
antenna substrate 30 includes a frame substrate bonding pad 35 on an outer peripheral portion of the lower surface thereof. The frame substrate bonding pad 35 is made from the electrical conductor layer 32. The frame substrate bonding pad 35 is exposed from the solder-resist layer 33. The frame substrate bonding pad 35 is circular. A diameter of the frame substrate bonding pad 35 is about from 300 to 600 µm. The frame substrate bonding pad 35 is bonded to the antenna substrate bonding pad 25 of the frame substrate 20 via thebonding member 41 made from solder. - The
semiconductor element 15 is a high-frequency element. High-frequency signals received by theantenna patterns 16 and 34 are input to thesemiconductor element 15. Alternatively, thesemiconductor element 15 outputs the high-frequency signals transmitted from theantenna patterns 16 and 34. - In the antenna module of the present example, a plurality of projecting
portions 26 are formed on the upper and lower surfaces of the framemain body 20A and the crosspiece 20B. The projectingportion 26 is formed on the solder-resist layer 23. The projectingportion 26 may be made from the same material as the solder-resist layer 23. A shape of the projectingportion 26 is, for example, a truncated cone in the present example. A diameter of the projectingportion 26 is about from 50 to 5000 µm. A height of the projectingportion 26 is about from 30 to 100 µm. The projectingportions 26 on the lower surface side come into contact with the upper surface of thecontrol substrate 10 at a fixed height. The projectingportions 26 on the upper surface side come into contact with the lower surface of theantenna substrate 30 at a fixed height. - As described above, in the antenna module of the present example, the frame substrate 20 includes the crosspiece 20B in the area defined by the inner periphery of the frame
main body 20A. Further, the plurality of projectingportions 26 that come into contact with thecontrol substrate 10 at a fixed height are formed on the lower surfaces of the framemain body 20A and the crosspiece 20B. The plurality of projectingportions 26 that come into contact with theantenna substrate 30 at a fixed height are provided on the upper surfaces of the framemain body 20A and the crosspiece 20B. With these projectingportions 26, gaps G1 and G2 between thecontrol substrate 10 and theantenna substrate 30 are held constant. Therefore, according to the antenna module of the present example, there is no variation in distance or inclination between thecontrol substrate 10 and theantenna substrate 30. Thus, according to the antenna module of the present example, it is possible to provide an antenna module having stable transmission and reception characteristics. - Next, a method for bonding the
control substrate 10, the frame substrate 20, and theantenna substrate 30 of the antenna module of the aforementioned example will be described. - First, as illustrated in
FIG. 3 , thecontrol substrate 10, the frame substrate 20, and theantenna substrate 30 are prepared. Note that the bondingmember 41 made from solder is fused in advance to the framesubstrate bonding pad 17 of thecontrol substrate 10 and the frame substrate bonding pad 35 of theantenna substrate 30. At this time, a protruding height of thebonding member 41 from the solder-resistlayers 14 and 33 is about from 10 to 50 µm higher than a protruding height of the projectingportions 26 from the solder-resist layer 23. - Next, as illustrated in
FIG. 4 , thecontrol substrate 10, the frame substrate 20, and theantenna substrate 30 are stacked vertically. At this time, a top portion of thebonding member 41 fused on thecontrol substrate 10 comes into contact with the control substrate bonding pad 24 of the frame substrate 20. A top portion of thebonding member 41 fused on theantenna substrate 30 comes into contact with the antenna substrate bonding pad 25 of the frame substrate 20. At this time, gaps of about from 10 to 50 µm are formed between the projectingportions 26 and thecontrol substrate 10 as well as theantenna substrate 30. - Next, as illustrated in
FIG. 5 , the bondingmember 41 made from solder is melted by heating while applying a load to theantenna substrate 30 from above. At this time, the projectingportions 26 on the lower surface side of the frame substrate 20 all come into contact with the upper surface of thecontrol substrate 10 at a fixed height. The projectingportions 26 on the upper surface side of the frame substrate 20 all come into contact with the lower surface of theantenna substrate 30 at a fixed height. These projectingportions 26 are cooled while being in contact with thecontrol substrate 10 and theantenna substrate 30 to solidify thebonding member 41. As a result, thecontrol substrate 10, the frame substrate 20, and theantenna substrate 30 are bonded at a predetermined interval corresponding to the height of the projectingportions 26 in the region corresponding to the framemain body 20A. - Next, as illustrated in
FIG. 6 , the bondingmember 42 in liquid form and made from an uncured thermosetting resin is injected between the crosspiece 20B of the frame substrate 20 and thecontrol substrate 10 as well as theantenna substrate 30, and thebonding member 42 is thermally cured by heating while applying a load to theantenna substrate 30 from above. - At this time, the projecting
portions 26 on the lower surface side of the frame substrate 20 all come into contact with the upper surface of thecontrol substrate 10 at a fixed height. The projectingportions 26 on the upper surface side of the frame substrate 20 all come into contact with the lower surface of theantenna substrate 30 at a fixed height. - As a result, the
control substrate 10, the frame substrate 20, and theantenna substrate 30 are bonded at a predetermined interval corresponding to the height of the projectingportions 26 in a region corresponding to the framemain body 20A and the crosspiece 20B. Thus, there is no variation in distance or inclination between thecontrol substrate 10 and theantenna substrate 30, and an antenna module having stable transmission and reception characteristics is completed. - When the
bonding member 42 in liquid form is to be injected, resin injection holes 36 and 27 may be provided in advance in theantenna substrate 30 and the frame substrate 20, and injection may be performed via these resin injection holes 36 and 27. - Next,
FIG. 7 illustrates a second example of an embodiment of the present disclosure in a schematic exploded cross-sectional view and a schematic cross-sectional view. In the example illustrated inFIG. 7 , the same reference signs are assigned to the same locations as in the first example described above, and detailed descriptions thereof will be omitted. - In the present example, projecting
portions 19 are provided on the upper surface of the solder-resistlayer 14 on the upper surface side of thecontrol substrate 10. Projecting portions 37 are provided on the lower surface of the solder-resist layer 33 on the lower surface side of theantenna substrate 30. These projectingportions 19 and 37 have the same shape and are made from the same material as the projectingportions 26 in the first example described above. - The projecting
portions 19 of thecontrol substrate 10 come into contact with the lower surfaces of the framemain body 20A and the crosspiece 20B at a fixed height. The projecting portions 37 of theantenna substrate 30 come into contact with the upper surfaces of the framemain body 20A and the crosspiece 20B at a fixed height. - Thus, in the antenna module of the present example, the
control substrate 10 includes, on the upper surface thereof, the plurality of projectingportions 19 that come into contact with the framemain body 20A and the crosspiece 20B at a fixed height. Theantenna substrate 30 includes, on the lower surface thereof, the plurality of projecting portions 37 that come into contact with the framemain body 20A and the crosspiece 20B at a fixed height. With these projectingportions 19 and 37, the gaps G1 and G2 between thecontrol substrate 10 and theantenna substrate 30 are held constant. Therefore, according to the antenna module of the present example, there is no variation in distance or inclination between thecontrol substrate 10 and theantenna substrate 30. Thus, according to the antenna module of the present example, it is possible to provide an antenna module having stable transmission and reception characteristics. - Next,
FIG. 8 illustrates a third example of an embodiment of the present disclosure in a schematic exploded cross-sectional view and a schematic cross-sectional view. In the example illustrated inFIG. 8 , the same reference signs are assigned to the same locations as in the first example described above, and detailed descriptions thereof will be omitted. - In the present example, the projecting
portions 19 are provided on the upper surface of the solder-resistlayer 14 on the upper surface side of thecontrol substrate 10. The projectingportions 26 are provided on the upper surface of the solder-resist layer 23 on the upper surface side of the frame substrate 20. These projectingportions portions 26 in the first example described above. - The projecting
portions 19 of thecontrol substrate 10 come into contact with the lower surfaces of the framemain body 20A and the crosspiece 20B at a fixed height. The projectingportions 26 of the frame substrate 20 come into contact with the lower surface of theantenna substrate 30 at a fixed height. - Thus, in the antenna module of the present example, the
control substrate 10 includes, on the upper surface thereof, the plurality of projectingportions 19 that come into contact with the framemain body 20A and the crosspiece 20B at a fixed height. The frame substrate 20 includes, on the upper surface thereof, the plurality of projectingportions 26 that come into contact with theantenna substrate 30 at a fixed height. With these projectingportions control substrate 10 and theantenna substrate 30 are held constant. Therefore, according to the antenna module of the present example, there is no variation in distance or inclination between thecontrol substrate 10 and theantenna substrate 30. Thus, according to the antenna module of the present example, it is possible to provide an antenna module having stable transmission and reception characteristics. - Next,
FIG. 9 illustrates a fourth example of an embodiment of the present disclosure in a schematic exploded cross-sectional view and a schematic cross-sectional view. In the example illustrated inFIG. 9 , the same reference signs are assigned to the same locations as in the first example described above, and detailed descriptions thereof will be omitted. - The projecting
portions 26 are provided on the lower surface of the solder-resist layer 23 on the lower surface side of the frame substrate 20. The projecting portions 37 are provided on the lower surface of the solder-resist layer 33 on the lower surface side of theantenna substrate 30. These projectingportions 26 and 37 have the same shape and are made from the same material as the projectingportions 26 in the first example described above. - The projecting
portions 26 of the frame substrate 20 come into contact with the upper surface of thecontrol substrate 10 at a fixed height. The projecting portions 37 of theantenna substrate 30 come into contact with the upper surfaces of the framemain body 20A and the crosspiece 20B at a fixed height. - Thus, in the antenna module of the present example, the frame substrate 20 includes, on the lower surface thereof, the plurality of projecting
portions 26 that come into contact with thecontrol substrate 10 at a fixed height. Theantenna substrate 30 includes, on the lower surface thereof, the plurality of projecting portions 37 that come into contact with the framemain body 20A and the crosspiece 20B at a fixed height. With these projectingportions 26 and 37, the gaps G1 and G2 between thecontrol substrate 10 and theantenna substrate 30 are held constant. Therefore, according to the antenna module of the present example, there is no variation in distance or inclination between thecontrol substrate 10 and theantenna substrate 30. Thus, according to the antenna module of the present example, it is possible to provide an antenna module having stable transmission and reception characteristics. - In the antenna module according to the present disclosure, the frame substrate includes the crosspiece in the area defined by the inner periphery of the frame main body, and between the frame main body/the crosspiece and the control substrate as well as the antenna substrate, projecting portions that come into contact with the opposing control substrate, frame substrate, and antenna substrate are provided at a fixed height. Therefore, there is no variation in distance or inclination between the control substrate and the antenna substrate. As a result, the antenna module of the present disclosure is an antenna module having stable transmission and reception characteristics for high-frequency signals in a desired frequency bandwidth.
- Note that the present disclosure is not limited to the antenna modules of the respective examples described above, and various changes or improvements can be made within the scope of the claims. For example, in the respective examples described above, the
control substrate 10, the frame substrate 20, and theantenna substrate 30 are bonded by two types of bonding members of thebonding member 41 made from solder and thebonding member 42 made from a thermosetting resin. Apart from this, as illustrated inFIG. 10 , thecontrol substrate 10, the frame substrate 20, and theantenna substrate 30 may be bonded by only thebonding member 42 made from a thermosetting resin. In this case, the method for bonding thecontrol substrate 10, the frame substrate 20, and theantenna substrate 30 of the antenna module can be made simpler. - In the respective examples described above, the projecting
portions - In the respective examples described above, the
semiconductor element 15 is housed inside thecontrol substrate 10, but thesemiconductor element 15 may be mounted on at least one of the upper surface and the lower surface of the control substrate. - Furthermore, in the respective examples described above, the shapes of the frame
substrate bonding pad 17, the external connection pad 18, the control substrate bonding pad 24, the antenna substrate bonding pad 25, and the frame substrate bonding pad 35 may be shapes other than circular. -
- 10
- Control substrate
- 20
- Frame substrate
- 20A
- Frame main body
- 20B
- Crosspiece
- 19, 26, 37
- Projecting portion
- 30
- Antenna substrate
- 15
- Semiconductor element
- 41, 42
- Bonding member
- 16, 34
- Antenna pattern
Claims (15)
- An antenna module, comprising:a control substrate having a flat plate shape and configured to house or mount a semiconductor element;a frame substrate bonded to an upper surface of the control substrate via a bonding member, and exposing a center portion of the upper surface of the control substrate; andan antenna substrate having a flat plate shape, bonded to an upper surface of the frame substrate via a bonding member so as to face the control substrate and provided with a plurality of antenna patterns disposed along an upper surface and a lower surface of the antenna substrate,wherein the frame substrate comprises:a frame main body having a frame shape along an outer peripheral portion of the control substrate;a crosspiece for reinforcement extending across an area defined by an inner periphery of the frame main body; andon the frame main body and the crosspiece, a plurality of projecting portions that come into contact with the control substrate at a fixed height; and a plurality of projecting portions that come into contact with the antenna substrate at a fixed height.
- The antenna module according to claim 1, wherein
the frame substrate is provided with solder-resist layers respectively adhered to the upper and lower surfaces thereof, and
the projecting portions are positioned on the solder-resist layers. - The antenna module according to claim 2, wherein the projecting portions are made from a same material as the solder-resist layer.
- An antenna module, comprising:a control substrate having a flat plate shape and configured to house or mount a semiconductor element;a frame substrate bonded to an upper surface of the control substrate via a bonding member and exposing a center portion of the upper surface of the control substrate; andan antenna substrate having a flat plate shape, bonded to an upper surface of the frame substrate via a bonding member so as to face the control substrate, and provided with a plurality of antenna patterns disposed along an upper surface and a lower surface of the antenna substrate,wherein the frame substrate comprises:a frame main body having a frame shape along an outer peripheral portion of the control substrate; anda crosspiece for reinforcement extending across an area defined by an inner periphery of the frame main body, andthe control substrate and the antenna substrate each comprise, on a surface facing the frame substrate, a plurality of projecting portions that come into contact with the frame main body and the crosspiece at a fixed height.
- The antenna module according to claim 4, wherein
the control substrate and the antenna substrate are each provided with a solder-resist layer adhered to the surface facing the frame substrate, and
the projecting portions are positioned on the solder-resist layer. - The antenna module according to claim 5, wherein the projecting portions are made from a same material as the solder-resist layer.
- An antenna module, comprising:a control substrate having a flat plate shape and configured to house or mount a semiconductor element;a frame substrate bonded to an upper surface of the control substrate via a bonding member and exposing a center portion of the upper surface of the control substrate; andan antenna substrate having a flat plate shape, bonded to an upper surface of the frame substrate via a bonding member so as to face the control substrate, and provided with a plurality of antenna patterns disposed along an upper surface and a lower surface of the antenna substrate,wherein the frame substrate comprises:a frame main body having a frame shape along an outer peripheral portion of the control substrate;a crosspiece for reinforcement extending across an area defined by an inner periphery of the frame main body; andon upper surfaces of the frame main body and the crosspiece, a plurality of projecting portions that come into contact with the antenna substrate at a fixed height, andthe control substrate comprises, on the upper surface thereof, a plurality of projecting portions that come into contact with the frame main body and the crosspiece at a fixed height.
- The antenna module according to claim 7, wherein
the frame substrate and the control substrate are each provided with a solder-resist layer adhered to the surface provided with the projecting portions, and
the projecting portions are positioned on the solder-resist layer. - The antenna module according to claim 8, wherein the projecting portions are made from a same material as the solder-resist layer.
- An antenna module, comprising:a control substrate having a flat plate shape and configured to house or mount a semiconductor element;a frame substrate bonded to an upper surface of the control substrate via a bonding member and exposing a center portion of the upper surface of the control substrate; andan antenna substrate having a flat plate shape, bonded to an upper surface of the frame substrate via a bonding member so as to face the control substrate, and provided with a plurality of antenna patterns disposed along an upper surface and a lower surface of the antenna substrate,wherein the frame substrate comprises:a frame main body having a frame shape along an outer peripheral portion of the control substrate;a crosspiece for reinforcement extending across an area defined by an inner periphery of the frame main body; andon lower surfaces of the frame main body and the crosspiece, a plurality of projecting portions that come into contact with the control substrate at a fixed height, andthe antenna substrate comprises, on the lower surface thereof, a plurality of projecting portions that come into contact with the frame main body and the crosspiece at a fixed height.
- The antenna module according to claim 10, wherein
the frame substrate and the antenna substrate are each provided with a solder-resist layer adhered to the surface provided with the projecting portions, and
the projecting portions are positioned on the solder-resist layer. - The antenna module according to claim 11, wherein the projecting portions are made from a same material as the solder-resist layer.
- The antenna module according to any one of claims 1 to 12, wherein the bonding member is made from solder or a thermosetting resin.
- The antenna module according to any one of claims 1 to 12, wherein the projecting portions have another shape such as a shape of a truncated cone, a cylinder, a truncated pyramid, a prism, or a cross-shaped column.
- The antenna module according to any one of claims 1 to 12, wherein the semiconductor element is mounted on at least one of the upper surface and the lower surface of the control substrate.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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JP2016246226 | 2016-12-20 | ||
PCT/JP2017/043057 WO2018116781A1 (en) | 2016-12-20 | 2017-11-30 | Antenna module |
Publications (3)
Publication Number | Publication Date |
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EP3561953A1 true EP3561953A1 (en) | 2019-10-30 |
EP3561953A4 EP3561953A4 (en) | 2020-07-22 |
EP3561953B1 EP3561953B1 (en) | 2022-02-09 |
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EP17882668.1A Active EP3561953B1 (en) | 2016-12-20 | 2017-11-30 | Antenna module |
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US (1) | US10965013B2 (en) |
EP (1) | EP3561953B1 (en) |
JP (1) | JP6826132B2 (en) |
KR (1) | KR102102626B1 (en) |
CN (1) | CN109983619B (en) |
TW (1) | TWI669850B (en) |
WO (1) | WO2018116781A1 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
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EP3561954A4 (en) * | 2016-12-22 | 2020-08-05 | Kyocera Corporation | Antenna substrate and manufacturing method therefor |
EP3621153A4 (en) * | 2017-05-02 | 2021-01-20 | Amotech Co., Ltd. | Antenna module |
EP3989361A4 (en) * | 2019-06-24 | 2022-07-13 | Mitsubishi Electric Corporation | Antenna manufacturing method and antenna device |
Families Citing this family (7)
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TWI653785B (en) * | 2016-12-22 | 2019-03-11 | 日商京瓷股份有限公司 | Antenna substrate |
US11018098B2 (en) * | 2018-08-31 | 2021-05-25 | Micron Technology, Inc. | Fabricated two-sided millimeter wave antenna using through-silicon-vias |
CN110191579B (en) * | 2019-06-11 | 2020-12-08 | Oppo广东移动通信有限公司 | Circuit board assembly and electronic equipment |
KR102659556B1 (en) * | 2019-07-17 | 2024-04-23 | 삼성전자 주식회사 | Electronic device including interposer |
KR20210131477A (en) * | 2020-04-23 | 2021-11-03 | 삼성전자주식회사 | Semiconductor device |
US11888208B2 (en) | 2020-08-25 | 2024-01-30 | STMicroelectronics (Alps) SAS | Antenna package |
US20240055768A1 (en) * | 2022-08-12 | 2024-02-15 | Apple Inc. | Antenna Feed Structure |
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JPH02256305A (en) * | 1988-12-24 | 1990-10-17 | Kojima Press Co Ltd | Microstrip antenna |
JP3683422B2 (en) * | 1998-10-30 | 2005-08-17 | 三菱電機株式会社 | Microstrip antenna and microstrip antenna substrate |
JP2004327641A (en) * | 2003-04-24 | 2004-11-18 | Tdk Corp | Electronic component module |
JP2010177604A (en) * | 2009-02-02 | 2010-08-12 | Renesas Electronics Corp | Semiconductor manufacturing method and manufacturing device |
US9620464B2 (en) | 2014-08-13 | 2017-04-11 | International Business Machines Corporation | Wireless communications package with integrated antennas and air cavity |
JP2016066699A (en) * | 2014-09-25 | 2016-04-28 | 京セラサーキットソリューションズ株式会社 | Composite wiring board and mounting structure |
JP2016143757A (en) * | 2015-02-02 | 2016-08-08 | 富士通株式会社 | Electronic device and manufacturing method of the same |
-
2017
- 2017-11-30 CN CN201780070928.9A patent/CN109983619B/en active Active
- 2017-11-30 US US16/463,842 patent/US10965013B2/en active Active
- 2017-11-30 EP EP17882668.1A patent/EP3561953B1/en active Active
- 2017-11-30 KR KR1020197014071A patent/KR102102626B1/en active IP Right Grant
- 2017-11-30 JP JP2018557640A patent/JP6826132B2/en active Active
- 2017-11-30 WO PCT/JP2017/043057 patent/WO2018116781A1/en unknown
- 2017-12-04 TW TW106142374A patent/TWI669850B/en active
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3561954A4 (en) * | 2016-12-22 | 2020-08-05 | Kyocera Corporation | Antenna substrate and manufacturing method therefor |
EP3621153A4 (en) * | 2017-05-02 | 2021-01-20 | Amotech Co., Ltd. | Antenna module |
US11251538B2 (en) | 2017-05-02 | 2022-02-15 | Amotech Co., Ltd. | Antenna module |
EP3989361A4 (en) * | 2019-06-24 | 2022-07-13 | Mitsubishi Electric Corporation | Antenna manufacturing method and antenna device |
Also Published As
Publication number | Publication date |
---|---|
TW201828530A (en) | 2018-08-01 |
TWI669850B (en) | 2019-08-21 |
WO2018116781A1 (en) | 2018-06-28 |
JPWO2018116781A1 (en) | 2019-10-24 |
KR102102626B1 (en) | 2020-04-21 |
CN109983619B (en) | 2020-09-01 |
CN109983619A (en) | 2019-07-05 |
JP6826132B2 (en) | 2021-02-03 |
US10965013B2 (en) | 2021-03-30 |
EP3561953B1 (en) | 2022-02-09 |
EP3561953A4 (en) | 2020-07-22 |
KR20190059984A (en) | 2019-05-31 |
US20190334231A1 (en) | 2019-10-31 |
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